Using jquery, how do i check a radio button based on a variable value?

Question

I have a list of radio buttons. I need to make one of them checked based on the variable i have. How do i accomplish this? The problem is i have no control of what the radio but

Answer 1

you can use the attribute equals selector to target the correct radio then use .prop() to set the checked property

$('input[name=CAT_Custom_378508][value=' + preSelect + ']').prop('checked',true)

FIDDLE

Answer 2

Try this:

$('input[type=radio][value=' + preSelect + ']').attr('checked', true);